The @ symbol can also appear in regular formulas outside of tables when Excel thinks you're trying to reference a single value from a range. If you see it pop up unexpectedly, it usually means Excel ...

For years, a French mathematician searched for a proof that a gigantic number is prime. His method is still used 150 years ...

Apple co-founder Steve Jobs was infamous for his harsh critiques of the work of his team. Hardware or software, ...

In 1982, a 21-year-old Chris Espinosa faced a familiar challenge in software design: satisfying Steve Jobs’ exacting eye.